12 June 2018

Reactive hyperostosis


The specimen in the photo is a section of a deer's thoracic wall, with a Bear Razorhead-tipped arrow traversing five ribs and covered with reactive bone formation, a process that would have required many years.

Photo trimmed and modified for clarity from the original by Robert Stegall, whose father shot the deer and found the anomaly while dressing it out.  Posted by the Utah Conservation Officers Association on Facebook.

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